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It’s a bird… It’s a plane… No, it’s an object from another solar system! Astronomers have been scrambling to identify a mysterious object passing through our solar system at a speed of about 160,000 km/h. This NASA file image shows a simulation of asteroids passing the earth. (Handout)

How scientists discovered our first interstellar mystery visitor

Astronomers have detected what is believed to be the first interstellar object ever seen passing through our solar system.
Without satellites, modern technologies such mobiles phones and GPS would not exist. Flickr/NASA Goddard Space Flight Center

Curious Kids: How do satellites get back to Earth?

We've all seen videos of satellites being blasted off into space - but once they're locked in orbit around the earth, how do we bring them back down?
Cmdr. Michael Burnham (Sonequa Martin-Green) goes on a scientifically implausible spacewalk in Star Trek: Discovery. (Handout)

How ‘Star Trek: Discovery’ warps science

Star Trek Discovery is the latest offering in the 50-year-old science fiction franchise beloved by scientists — but it isn't about science.
Surgeons at the University of Saskatchewan use a 3D printed human brain to plan complex neurosurgical procedures for patients with movement disorders.

3D printers: A revolutionary frontier for medicine

From cheap prosthetic arms for landmine victims in Sudan to the promise of surgery on astronauts in space — 3D printing is sparking a healthcare revolution.
The mass of the Earth is big enough that the gravitational force it creates can pull the hard shape of ice, rock and metal into a sphere. NASA Earth Observatory images by Joshua Stevens, using Suomi NPP VIIRS data from Miguel Román, NASA's Goddard Space Flight Center

Curious Kids: Why is the Earth round?

Imagine the Earth pulling everything it is made up of, all of its mass, towards its centre. This happens evenly all over the Earth, causing it to take on a round shape.
A huge solar flare flashes in the middle of the sun on Sept. 6, 2017. A separate image of the Earth provides scale. NASA/GSFC/SDO

Massive sunspots and huge solar flares mean unexpected space weather for Earth

At a time in the sun's cycle when space weather experts expect less solar activity, our star is going bonkers with solar flares and coronal mass ejections. What effects will Earth feel?

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